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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
This is because in Python 3.X
map
returns an iterator instead a list. In general iterators in Python are "empty" after first runthrough thusmin(n)
tries to run on empty iterator (emptied bymax
) and throws an error.Solution: use
list(map(...))
.Python 3 is, in many ways, not backward compatible with Python 2. But, this kata is for Python 2.